<template>
    <el-card class="page-container">
        <template #header>
            <div class="header">
                <span>文章分类</span>
                <div class="extra">
                    <el-button type="primary" @click="dialogVisible = true;title='添加分类';clearData()">添加分类
                    </el-button>
                </div>
            </div>
        </template>
        <el-table :data="categoryList" style="width: 100%">
            <el-table-column label="序号" width="100" type="index"></el-table-column>
            <el-table-column label="分类名称" prop="categoryName"></el-table-column>
            <el-table-column label="分类别名" prop="categoryAlias"></el-table-column>
            <el-table-column label="操作" width="100">
                <template #default="{ row }">
                    <el-button :icon="Edit" circle plain type="primary"
                               @click="showDialog(row)"></el-button>
                    <el-button :icon="Delete" circle plain type="danger"
                               @click="deleteCategory(row)"></el-button>
                </template>
            </el-table-column>
            <template #empty>
                <el-empty description="没有数据"/>
            </template>
        </el-table>

        <!-- 添加分类弹窗 -->
        <el-dialog v-model="dialogVisible" :title="title" width="30%">
            <el-form :model="categoryModel" :rules="rules" label-width="100px" style="padding-right: 30px">
                <el-form-item label="分类名称" prop="categoryName">
                    <el-input v-model="categoryModel.categoryName" minlength="1" maxlength="10"></el-input>
                </el-form-item>
                <el-form-item label="分类别名" prop="categoryAlias">
                    <el-input v-model="categoryModel.categoryAlias" minlength="1" maxlength="15"></el-input>
                </el-form-item>
            </el-form>
            <template #footer>
        <span class="dialog-footer">
            <el-button @click="dialogVisible = false">取消</el-button>
            <el-button type="primary" @click="title==='添加分类'?addCategory():updateCategory()"> 确认 </el-button>
        </span>
            </template>
        </el-dialog>

    </el-card>
</template>

<script setup>
    import {
        Edit,
        Delete
    } from '@element-plus/icons-vue'
    import {ElMessage, ElMessageBox} from "element-plus";
    import {ref} from 'vue'

    const categoryList = ref([
        {
            "id": 3,
            "categoryName": "美食",
            "categoryAlias": "my",
            "createTime": "2023-09-02 12:06:59",
            "updateTime": "2023-09-02 12:06:59"
        },
        {
            "id": 4,
            "categoryName": "娱乐",
            "categoryAlias": "yl",
            "createTime": "2023-09-02 12:08:16",
            "updateTime": "2023-09-02 12:08:16"
        },
        {
            "id": 5,
            "categoryName": "军事",
            "categoryAlias": "js",
            "createTime": "2023-09-02 12:08:33",
            "updateTime": "2023-09-02 12:08:33"
        }
    ])

    // 声明一个异步的函数
    import {
        articleCategoryService,
        articleCategoryAddService,
        articleCategoryUpdateService,
        articleCategoryDeleteService
    } from "@/api/article";


    const articleCategoryList = async () => {
        let result = await articleCategoryService();
        categoryList.value = result.data;
    }

    articleCategoryList();

    //控制添加分类弹窗
    const dialogVisible = ref(false)

    //添加分类数据模型
    const categoryModel = ref({
        categoryName: '',
        categoryAlias: ''
    })
    //添加分类表单校验
    const rules = {
        categoryName: [
            {required: true, message: '请输入分类名称', trigger: 'blur'},
        ],
        categoryAlias: [
            {required: true, message: '请输入分类别名', trigger: 'blur'},
        ]
    }

    // 调用接口，添加表单
    const addCategory = async () => {
        // 调用接口
        let result = await articleCategoryAddService(categoryModel.value);
        ElMessage.success(result.message ? result.message : "添加成功")

        // 调用获取所有文章分类的函数
        await articleCategoryList();
        dialogVisible.value = false;
    }

    // 定义变量，控制标题的样式
    const title = ref("");

    // 展示编辑弹窗
    const showDialog = (row) => {
        dialogVisible.value = true;
        title.value = '编辑分类'
        // 数据拷贝
        categoryModel.value.categoryName = row.categoryName;
        categoryModel.value.categoryAlias = row.categoryAlias;
        // 扩展id属性，将来需要传递给后台，完成分类的修改
        categoryModel.value.id = row.id;
    }

    // 编辑分类
    const updateCategory = async () => {
        // 调用接口
        let result = await articleCategoryUpdateService(categoryModel.value)

        ElMessage.success(result.message ? result.message : "修改成功");

        // 调用获取所有分类的函数
        await articleCategoryList();

        // 隐藏弹窗
        dialogVisible.value = false;
    }

    // 清空模型数据
    const clearData = () => {
        categoryModel.value.categoryName = "";
        categoryModel.value.categoryAlias = "";
    }

    // 删除分类
    const deleteCategory = (row) => {
        // 提示用户  确认框

        ElMessageBox.confirm(
            '您确认要删除该分类信息吗？',
            '温馨提示',
            {
                confirmButtonText: '确认',
                cancelButtonText: '取消',
                type: 'warning',
            }
        )
            .then(async () => {
                // 调用接口
                await articleCategoryDeleteService(row.id)
                ElMessage({
                    type: 'success',
                    message: '删除成功',
                })

                // 刷新列表
                await articleCategoryList();
            })
            .catch(() => {

                ElMessage({
                    type: 'info',
                    message: '取消删除',
                })
            })
    }
</script>

<style lang="scss" scoped>
  .page-container {
    min-height: 100%;
    box-sizing: border-box;

    .header {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
  }
</style>
